In an L-C-R a.c. circuit at resonance, the current :

is always in phase with the voltage

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always leads the voltage

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always lags behind the voltage

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may lead or lag behind the voltage

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Solution

The correct option is A is always in phase with the voltage
At resonance, $ω = \frac{1}{\sqrt{L C}}$
$Z = R$
the current is in phase with voltage.

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In an L-C-R a.c. circuit at resonance, the current :

The correct option is A is always in phase with the voltageAt resonance, ω=1√LCZ=Rthe current is in phase with voltage.

The correct option is A is always in phase with the voltage
At resonance, $ω = \frac{1}{\sqrt{L C}}$
$Z = R$
the current is in phase with voltage.